| Mordecai vs Reina | 10–8 | 55.56% |
| Mordecai vs King | 3–12 | 20.00% |
| Mordecai vs Yoshimitsu | 1–14 | 6.67% |
| Mordecai vs Victor | 4–11 | 26.67% |
| Mordecai vs Jin | 3–10 | 23.08% |
| Mordecai vs Azucena | 3–8 | 27.27% |
| Mordecai vs Xiaoyu | 3–5 | 37.50% |
| Mordecai vs Law | 2–5 | 28.57% |
| Mordecai vs Kazuya | 4–3 | 57.14% |
| Mordecai vs Eddy | 0–7 | 0.00% |
| Mordecai vs Anna | 3–4 | 42.86% |
| Mordecai vs Steve | 4–2 | 66.67% |
| Mordecai vs Devil Jin | 3–3 | 50.00% |
| Mordecai vs Clive | 3–3 | 50.00% |
| Mordecai vs Jack-8 | 3–2 | 60.00% |
| Mordecai vs Asuka | 1–4 | 20.00% |
| Mordecai vs Feng | 1–4 | 20.00% |
| Mordecai vs Claudio | 2–3 | 40.00% |
| Mordecai vs Jun | 1–4 | 20.00% |
| Mordecai vs Bryan | 2–2 | 50.00% |
| Mordecai vs Lili | 2–2 | 50.00% |
| Mordecai vs Dragunov | 2–2 | 50.00% |
| Mordecai vs Lars | 0–4 | 0.00% |
| Mordecai vs Nina | 2–2 | 50.00% |
| Mordecai vs Panda | 3–1 | 75.00% |
| Mordecai vs Lidia | 2–2 | 50.00% |
| Mordecai vs Hwoarang | 0–3 | 0.00% |
| Mordecai vs Leo | 1–2 | 33.33% |
| Mordecai vs Zafina | 2–1 | 66.67% |
| Mordecai vs Alisa | 2–0 | 100.00% |
| Mordecai vs Lee | 0–2 | 0.00% |
| Mordecai vs Leroy | 2–0 | 100.00% |
| Mordecai vs Heihachi | 0–1 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.